Alexander Leonidovich Dvorkin (Template:Lang-ru; 20 August 1955, Moscow) is a Russian-American anti-cult activist and president of the Russian Association of Centers for Religious and Sectarian Studies. Dvorkin graduated Doctor of Philosophy in 1983 at the Saint Vladimir's Orthodox Theological Seminary in Crestwood, New York. He has appeared on Russian television.
Dvorkin is a critic of Scientology, which he regards as a dangerous cult. Church of Scientology-affiliated organizations describe him as an "anti-religious extremist," and compile negative information about him on their websites. In 1997, Scientology and several other new religious movements sued Dvorkin and the Russian Orthodox Church for defamation, but their case was dismissed.
He is Vice-President of FECRIS (European Federation of Centres of Research and Information on Cults and Sects).